Efficient Roof Selection in Rainwater Harvesting: Hybrid Multi-criteria and Experimental Approach

Muhammed Nimet Hamidi (), Shayan Shitreh, Ali Izzet Cengiz, Kadir Ozcelik, Bahriye Eryildiz-Yesir, Ömer Ekmekcioğlu, Oguzhan Murat Halat, Mehmet Cuneyd Demirel, Berk Canberk, Ismail Koyuncu, Onur Isik, Huseyin Guven, Hale Ozgun and Mustafa Evren Ersahin
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Muhammed Nimet Hamidi: Istanbul Technical University
Shayan Shitreh: Istanbul Technical University
Ali Izzet Cengiz: Istanbul Technical University
Kadir Ozcelik: Istanbul Technical University
Bahriye Eryildiz-Yesir: Istanbul Technical University
Ömer Ekmekcioğlu: Istanbul Technical University
Oguzhan Murat Halat: Istanbul Gelisim University
Mehmet Cuneyd Demirel: Istanbul Technical University
Berk Canberk: Istanbul Technical University
Ismail Koyuncu: Istanbul Technical University
Onur Isik: Istanbul Technical University
Huseyin Guven: Istanbul Technical University
Hale Ozgun: Istanbul Technical University
Mustafa Evren Ersahin: Istanbul Technical University

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2025, vol. 39, issue 4, No 4, 1567-1586

Abstract: Abstract This study aimed to investigate the effects of different roof configurations on the quality of harvested rainwater (HRW) for sustainable irrigation in agriculture. Three roofing materials (i.e. shingle, galvanized metal, and clay tile) and three roof pitch angles (i.e. 5°, 30°, and 42°) were used at pilot-scale. HRW was characterized in order to determine the roof type and roof slope effect on the HRW quality. HRW from galvanized metal roofs was of higher quality in terms of turbidity and pathogen microorganisms. HRW from shingle and clay tile roofs was treated with a sequential ultrafiltration (UF) membrane and ultraviolet (UV) disinfection system to meet the European Union (EU) water reuse standards for irrigation. The decision-making mechanism was used to select the most appropriate roof configuration. The results showed the significance of financial (21.89%) and environmental (19.75%) aspects. Also, the Escherichia coli (E.coli) content (7%) is the most determinant factor in HRW, followed by the operational cost (6.78%), and reduced runoff (5.73%). Among the roof configurations, galvanized metal roofs, specifically the metal roof with 5°, outperformed others due to their structural, technical, and environmental advances.

Keywords: Circular economy; Fuzzy AHP; TOPSIS; rainwater harvesting; Ultrafiltration; UV disinfection (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s11269-024-04023-3

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